Exhausting the air



(No Model.) 3 Sheets-Sheet l. H. A. BARBER.

EXHAUSTING THE AIR, GAS, AND WATER FROM'SUGTION BOXES FOR A PAPER MAKINGMACHINES.

(No Model.) 3 Sheets-Sheet 2.

H A. BARBER. EXHAUSTING THE AIR, GAS, AND WATER PROM SUCTION BOXES FORPAPER MAKING MACHINES.

N0. 280,555. Patented July 3, 1888.

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(No Model.) 3 Sheets-Sheet 3.

H. A. BARBER. EXHAUSTING THE AIR, GAS, AND WATER FROM SUCTION BOXES FORPAPER MAKING MACHINES.

N0. 280,555. Patented July 3, 1883.

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UNITED STATES PATENT Orrica HENRY A. BARBER, OF VATERTOVVN, NEXV YORK.

EXHAUSl'ING THE AIR, GASES, AND WATER FROM SUCTION-BOXES FORPAPER-MAKING MACHINES.

SPECIFICATION forming part of Letters Patent No. 280,555, dated July 3,1883.

Application filed March 521, 1883.

To all whom it may concern:

Be it known that I, HENRY A. BARBER, of Watertown, in the county ofJefferson and State of New York, have invented certain new and usefulImprovements in Exhausting the Air, Gases, and WVater from Suction-Boxesfor Paper-Making Machines and I do hereby declare the following to be afull, clear, and ex act description ofthe invention, such as will enableothers skilled in the art to which it pertains to make and use it,reference being had to the accompanying drawings, which form part ofthis'specification.

My invention relates to an improvement in exhausting the air, gases, andwater from suction-boxes of paper-making machines, to be used inconnection with paper and other machines where it is desired to exhaustthe wa ter from felts and pulpy material; and it consists in thecombination of one or more drafttubes which are connected with areservoir of water, a connecting pipe or pipes, and a box having aperforated cover or open top, over which the paper, pulp, or othermaterial is moved in a continuous sheet or mass, as will be more fullydescribed hereinafter.

The object of my invention is to form a more perfect exhaust or vacuumwhen operating upon pulpy fluids containing a'large amount of air orgases, so as to give a much steadier and more reliable suction than canbe obtained with siphons of ordinary construction, or pumps asordinarily used in connection with paper, felt, or other pulp machinesof any kind. v

Figuresl and 2 represent side elevations of my invention, taken fromopposite sides. Fig. 3 is an end view of the same. Fig. 4 is a planView. Fig. 5 is a side elevation of my inven tion, showing the relativeposition of the parts when in use.

0 represents a reservoir or watersupply chamber of any suitable shape,size, or construction which may be preferred, and whichis connected toany suitable water-supply so as to always maintain about the sameelevation. Secured to or placed at one end of this reservoir 0 is a muchshallower boX or chamber, G, which is to be filled with water or anyother fluid which will form a seal for the lower ends of the twodrafttubes A E. In actual (No model.)

' operation the lower ends of these pipes will be sealed in a stream ofrunning water. The shorter one, A, of the two draft-tubes is connectedto thereservoir, near its top, by the pipe B, which extends a suitabledistance downward into the reservoir, and by a second pipe, H, at anysuitable distance below the lower end of the pipe 13, and which pipe His provided with a stop-cock, valve, or other shutoff, L, so that theflow of the water through the pipe H- can be controlled and regulated atwill. The longer one, E, of the two draft-tubes is connected with thedrafttube A by means of the pipe T, which extends from the top of thetube A up near thetop of the tube E. Also connected with the top of thetube E is the pipe F, which extends any suitable distance down into thereservoir 0. Although only two draftpipes, A E, are here shown, theremay be a larger number, if so preferred.

level of the water in the reservoir 0 to a greater height than the fallfrom surface of water in reservoir 0 to the surface of water in G. Oneor more tubes maybe used extending up about thirty feet, or near thelimit of a perfect vacuum.

Extending from the top of the draft-tube E is a pipe, N, which has itsother end connected with the tube of the separating-chamber M, which canbe placed in an adjoining room or at any desired distance from thereservoir, and of the same level or at a higher or lower point than thedraft tube or tubes. This separating-chamber' is here shown as placedabove the top of the reservoir merely as a matter of convenience and notas a matter of necessity. Leading from the side of the separatingchamberM is a pipe, P, which has its other end connected with the box 0, oneonly being shown, which has a perforated cover, and over which theendless wire cloth, or screen, or felt carrying a moist sheet ofpaper-pulp is caused to pass, as used 011 a Fourdrinier or otherpapermaking machine. From the bottom of the sepaits lower end immersedin water or other sealing medium contained in the box S. The termseparating is applied to the chamber M, because in this chamber thewater, air, and

gas are separated, the air and gas being rating-chamber M extends apipe, R, which has 70 The drafttubeE should in no case extend from abovethe drawn off through the pipe N into the tops of the draft-tubes A E,while the water and heavier portions mixed therewith tiow off throughthe pipe 1%.

\Vhen desirable, separatingchamber M can be located on a levelsufiiciently above the perforated box 0, and cause said chamber todischarge water out about the same level with box 0, through pipe It,which, with box. S, is raised, care being taken to have pipe It of samelength as used to discharge on lower level. As the water which is drawnfrom the paper or pulpy material, often contains some of the materialitself, or coloring-matter, or chemicals of some kind, it desirable tocatch this water and save it, and it is therefore separated in thechamber M.

The operation of my invention is as follows: The lower ends of the twodraft-tubes A E are immersed in the water in the box G, so as to sealtheir ends, and thus prevent air and gas working up the draft-tubes, andthus insuring against risk of losing any part of the vacuum tlnroughthat source. The gate or stop-cock L in the pipe l-I being opened, atiow of water is started through the pipeA, and this water flowingthrough the pipe A will. carry with it enough of the air and gascontained in the pipe A and start a flow of water through the pipe Binto the top of the tube A. The flow of water trointhispipc B will stillfurther cause the air and gas in the pipe A to be entrained with thewater, and thus forced out of the pipe, causing as near a perfect vacuumin the pipe as possible. This pipe A, being connected by the pipe T withthe second draft-tube, E, the air and gas contained in the pipe 1 aredrawn out into the pipe A until a sufiicient vacuum has been formed inthe pipe E'to start a siphonic flow through the pipe F into the top ofthe drafttube It]. The vacuum in the two pipes A E, caused by thedownward flow of the water, will cause the gas and air to be exhaustedfrom the separating-chaml)er M, and the vacuum or partial vacuum formedin this chamber M will be exerted through the pipe .1. and theperforated cover of the box upon the sheet of wet paper, pulp, or othermaterial which is being passed over the top of the box 0.

\Vhere it is desired to save the water for the purpose of using it overagain, the separatingchamlier will be used; but where it is notdesirable to use the alter over again, this sepa rating-chamber will beentirely done away with, and the conneeting-pipe will then extenddirectly from the suction-box.to the suction-tubes. it will be seen thatthis separating-chamber may or may not be used.

l am aware that a pipe has been connected to the bottom of asuction-box, and steam or water forced through the pipe; but this deviceis dependent entirely for its action upon the amount of air which willbe drawn in by the current. My invention differs from this in connectingone end of a pipe with the suction box, and the other to a standpipethrough which a great suction is caused by the fall of a large body ofwater. In the one case only a slight and indirect suction is caused,while in the latter a positive and direct suction is caused.

1 am also aware that pipes provided with. cocks have been connected.with the suctionbox, so that when the cocks are opened the 'ater willtlow freely out. My invention differs from this in connecting thereservoir with a stand-pipe by a short pipe provided with a cock,whereby when the cock is opened the water tlows into the stand-pipe andstarts the whole machine into ope "ation. in neither of theabove-mentioned casesare stand-pipes employed, while the whole operationof my invention depends on them.

Having thus described my invention, .l claim 1. The combination of oneor more drafttubes, A E, connected by a suitable pipe or pipes with thereservoir of water, and a per 'foratcd or open box, 0, over which asheet of moist paper, pulp, or other material is made to pass,substantially as shown.

.3. The combination of one or more drafttubes, A E, having their lowerends submerged in a sealing niedium, with suitable pipes by which theyare connected with the reservoir, and a separating-chamber, M, which isconnected with a perforated or open box, 0, substantially as described.

3. The combination of one or more drafttubes, A. 1 connected by suitablepipes with the reservoir, the separatingchamber M and pipes N, 1, R, anda perforated or open box, 0, substantially as set forth.

4. The combination of the separating-chamher, the pipe 1; for connectingit with a perforated or open box, and the pipe It, having its lower endimmersed in a sealing medium, whereby the air and water are withdrawnfrom the paper, pulp, or other material by the vacuum created in thechamber, and caused to separate, substantially as specified.

5. The combination of a reservoir, a drafttubc, A, having the siphonictube B, connected with its upper end, and a tube, H, provided with agate or stop-cock connecting the drafttube with the reservoir 0, wherebythe tlow of water can be started through the tube B, substantially asshown and described.

(5. The combination of the suction-box of a paper-machine with aconnecting-tube and one or more draft-tubes which are connected directlythereto, so that the draft-tubes will exert a direct suction upon thebox, substantially as shown and described.

In testimony whereof I aflix my signature in presence of two witnesses.

HENRY ANSEL PARKE i.

\Vitnesses:

( 1].. CARTER, H. XV. SHEAD.

IIO

